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CO1920

DUPLICAREUS CORYDORA (Corydoras Duplicareus)

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This species is among a number of congeners native to the rio Negro region to possess a colour pattern with an oblique dark bar running along the dorsal surface of the body.

This unofficial group also includes C. burgessiC. davidsandsiC. duplicareusC. imitatorC. melini, and C. serratus, and among these C. duplicareus is most easily-confused with C. adolfoi.

The oblique dark body bar tends to be less broad in C. adolfoi, and the orange patch of pigment on the nape less intense than in C. duplicareus, but these characters cannot be used to separate the species reliably.

C. duplicareus does possess serrations on the posterior edge of the pectoral-fin spine which are lacking in C. adolfoi, but these are almost impossible to see with the naked eye.

 

http://www.seriouslyfish.com/species/corydoras-duplicareus/